Part I : Real and metaphorical "war" -- 1. Terrorism after September 11 -- 2. Does it help to define our dangers from terrorism as "war"? -- Part II : What can be done to reduce the threat? -- 3. Protection against unidentified terrorists -- 4. Intelligence -- Part III : Recognizing the costs of the steps we take -- 5. Civil liberties -- 6. Building the future internationally -- Part IV : Organizing for the necessary decisions -- 7. The problem of drifting into an "intelligence state" -- 8. Values and security.